Eventually, the tiara left the Essex family and was added to the collection at Cartier. The renowned French jeweler has loaned the tiara out on multiple occasions, allowing it to be worn by Clementine, Lady Churchill, for the coronation of Queen Elizabeth II, by Crown Princess Margarita of Romania for her wedding, and by a model in a Vogue photoshoot, to name a few. It has also been displayed in many exhibits. You can spot it sparkling away in the video below, from the large Paris exhibition earlier this year:

This tiara is actually pretty big. Its tall structure makes it one of the rare tiaras that can stand up in a hairstyle that might otherwise swallow a smaller piece (see both Clementine and Margarita above). The size plus the dangling pendant at the bottom center of the piece could make it hard to wear - but they make it great to display, so it's right at home in the Cartier collection.